1089447981075 has 216 divisors, whose sum is σ = 2225798016000. Its totient is φ = 526490331840.

The previous prime is 1089447981049. The next prime is 1089447981077. The reversal of 1089447981075 is 5701897449801.

1089447981075 is a `hidden beast` number, since 1 + 0 + 8 + 94 + 479 + 8 + 1 + 0 + 75 = 666.

It is not a de Polignac number, because 1089447981075 - 2¹⁰ = 1089447980051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089447981077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 71671326 + ... + 71686524.

Almost surely, 2^{1089447981075} is an apocalyptic number.

1089447981075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1089447981075 is an abundant number, since it is smaller than the sum of its proper divisors (1136350034925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089447981075 is an equidigital number, since it uses as much as digits as its factorization.

1089447981075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15275 (or 15249 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 63.

The spelling of 1089447981075 in words is "one trillion, eighty-nine billion, four hundred forty-seven million, nine hundred eighty-one thousand, seventy-five".